rendezvous with cassidoo challenge: 24.05.13

max_product.clj

(ns max-product
  (:require [clojure.test :refer [deftest is]]))

(defn max-product [nums]
  (->> (sort nums)
       (take-last 3)
       (reduce * 1)))

(deftest max-product-test
  (is (= 72 (max-product [2 4 1 3 -5 6]))))

Rust version:

pub fn max_product(nums: &[i32]) -> i32 {
    let mut nums = nums.to_owned();
    nums.sort();
    nums.iter().rev().take(3).fold(1, |acc, n| acc * n)
}

#[test]
fn max_product_test() {
    let nums = [2, 4, 1, 3, -5, 6];

    assert_eq!(max_product(&nums), 72);
}